NAME

csa_call_callbacks — force the invocation of the callback functions associated with the specified callback list(s)

SYNOPSIS

#include &<xcsa.h>
CSA_return_code csa_call_callbacks(
CSA_session_handle session,
CSA_flags reason,
CSA_extension *call_callbacks_extensions);

DESCRIPTION

The csa_call_callbacks function causes the service to call the registered callback functions associationed with the specified callback list(s). The service will process each specified callback list and call the registered callback functions if there have been changes that would trigger the callbacks of that type. The order in which callbacks are invoked is implementation specific.

Session (Session Handle)

Opaque session handle that represents a session with the calendaring service.

If a valid session handle is specified, the callback functions registered with that session are invoked. Session handles are created by a logon function call and invalidated with a logoff function call. If the session handle is invalid, then the error CSA_E_INVALID_SESSION_HANDLE is returned.

Reason (Flags)

A bitmask of flags. Unspecified flags should always be passed as 0. Undocumented flags are reserved. Each flag corresponds to a callback activity. Flag settings include:

CSA_CB_CALENDAR_LOGON: If set, the new callback will be invoked when a the calendar is accessed by a user.
CSA_CB_CALENDAR_DELETED: If set, the new callback will be invoked when a user requests that the calendar be deleted.
CSA_CB_CALENDAR_ATTRIBUTE_UPDATED: If set, the new callback will be invoked whenever a calendar attribute is updated.
CSA_CB_ENTRY_ADDED: If set, the new callback will be invoked whenever an entry is added to the calendar.
CSA_CB_ENTRY_DELETED: If set, the new callback will be invoked whenever an entry is deleted from the calendar.
CSA_CB_ENTRY_UPDATED: If set, the new callback will be invoked whenever an entry is updated on the calendar. It is implementation specific if the callback function is invoked before or after the specified update type occurs.

Call Callbacks Extensions (Extension)

A pointer to an array of CSA_extension structures for this function. The array may contain both input extensions for providing additional information to the function and output extensions for receiving information from the function. A value of NULL indicates that the caller is not using any extensions. See the extensions structure for more information.

RETURN VALUE

Call Callbacks Extensions (Extension)

If output extensions were passed to the function in the extensions list, the results from the service will be available in the extension. See the extensions structure for more information. Whether the function succeeded or not, and, if not, why. It may be success or one of the values listed under ERRORS below.

ERRORS

The csa_call_callbacks function returns the following error values:

CSA_E_FAILURE: There was a general failure that does not fit the description of any other error code.
CSA_E_INSUFFICIENT_MEMORY: Insufficient memory was available to complete the requested operation.
CSA_E_INVALID_FLAG: A flag value in the flags argument was invalid.
CSA_E_INVALID_FUNCTION_EXT: The function extension requested is invalid.
CSA_E_INVALID_PARAMETER: A function parameter was invalid.
CSA_E_INVALID_SESSION_HANDLE: The specified Session Handle is invalid or no longer valid (e.g., after logging off).
CSA_E_NO_AUTHORITY: The user has insufficient authority for this function.
CSA_E_NOT_SUPPORTED: The operation requested is not supported by this implementation.
CSA_E_SERVICE_UNAVAILABLE: The requested calendar service is unavailable.
CSA_E_UNSUPPORTED_FLAG: The flag requested is not supported.
CSA_E_UNSUPPORTED_FUNCTION_EXT: The specified function extension is not supported or CSA_EXT_REQUIRED is set.